1123056540 has 72 divisors (see below), whose sum is σ = 3479112000. Its totient is φ = 293107584.

The previous prime is 1123056527. The next prime is 1123056547. The reversal of 1123056540 is 456503211.

1123056540 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 0 + 5 + 654 + 0 = 666.

It is a super-2 number, since 2×1123056540² = 2522511984073543200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123056547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57915 + ... + 74834.

It is an arithmetic number, because the mean of its divisors is an integer number (48321000).

Almost surely, 2^1123056540 is an apocalyptic number.

1123056540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123056540 is an abundant number, since it is smaller than the sum of its proper divisors (2356055460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123056540 is a wasteful number, since it uses less digits than its factorization.

1123056540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132811 (or 132806 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1123056540 is about 33512.0357483696. The cubic root of 1123056540 is about 1039.4426685910.

Adding to 1123056540 its reverse (456503211), we get a palindrome (1579559751).

The spelling of 1123056540 in words is "one billion, one hundred twenty-three million, fifty-six thousand, five hundred forty".